Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical disc device and optical pick-up controller and its method

A technology of optical disc device and control device, applied in optical recording/reproduction, instrument, head configuration/installation, etc., which can solve problems such as staccato

Inactive Publication Date: 2006-02-15
コラボイノベーションズインコーポレイテッド
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of vibrating at a fixed cycle like jogging, even if the anti-vibration function is equipped, if the time between the running sound and the return is not accelerated, the next running sound will occur before the playback data is saved, and the result is still There will be staccato

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical disc device and optical pick-up controller and its method
  • Optical disc device and optical pick-up controller and its method
  • Optical disc device and optical pick-up controller and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Embodiments of the present invention will be described below using the drawings.

[0024] figure 1 This is a functional block diagram showing the internal configuration of a general optical disc drive. exist figure 1 Among them, 1 represents the optical disc, 2 represents the motor part that drives the optical disc to rotate, 3 represents the optical pickup, 4 represents the driver that drives the motor part 2 and the optical pickup 3 using the drive signal SD, and 5 represents the output signal SIN to the optical pickup 3 RF amplifier for amplification. The RF amplifier 5 outputs the audio signal SAD, the focus error signal SFE indicating the distance between the optical pickup 3 and the focus, and the first control signal SC1 indicating the state of the drive system detected from the signal SIN.

[0025] 10 is an LSI as an optical pickup control device, including a DSP 11 and a microprocessor 12 . DSP11 receives sound signal and outputs sound. In addition, cont...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

When defocusing occurs, an amplitude driving of a pickup is immediately conducted without a waiting time. Moreover, an amplitude driving with a first amplitude A1 is conducted for a prescribed time. When a proper focusing is not detected, an amplitude driving with a second amplitude B1, which is larger than the amplitude A1, is conducted.

Description

technical field [0001] The present invention relates to an optical disc device such as a portable CD player, and particularly relates to a technique related to a lead-in operation when focus deviation occurs. Background technique [0002] Figure 7 A flowchart representing a prior art focused import method, Figure 8 A timing chart showing a prior art focusing operation. Such as Figure 7 as well as Figure 8 As shown, if focus deviation is detected (Yes at SZ1), in order to wait for the vibration of the spring supporting the lens in the optical pickup to subside, after waiting for a given time (SZ2), in order to search for the gap between the optical pickup and the optical disc The focus is aligned (focusing), and the reintroduction operation of vibrating the optical pickup up and down at a constant frequency is performed (SZ3). Since the focus error can only be detected in the vicinity of the focus overlap, when the detection of the focus overlap is confirmed by the gen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/00G11B7/09G11B7/085
CPCG11B7/0946G11B7/08511
Inventor 石川良一
Owner コラボイノベーションズインコーポレイテッド